Granite stones, that is built of granite - acid igneous-plutonic rock, have different colors and shapes. Due to variety of colors and availability of large blocks, easiness of forming, polishing and aesthetic values, granite is used as a construction and decoration rock. What is more, granite is used in the process of cobblestones production, filling in tracks in speedway sports (in order to decrease wheels' traction) and in curling (granite is used in the process of curling stones production).